A bay-wide approach to oyster stock assessment, estimates of vital rates and disease status.
NOAA-NCBO. $ 168,096. 7/1/2011-6/30/2012.
This is a collaborative project between VIMS (Roger Mann, Ryan Carnegie, Melissa Southworth), the Virginia Marine Resources Commission (VMRC, James Wesson), Maryland Department of Natural Resources (MD DNR, Mike Naylor, Chris Dungan, Mitch Tarnowski), and the University of Maryland (UMD, Ken Paynter). The overall objective of the proposed effort is to design, implement, and complete an oyster (Crassostrea virginica) stock assessment that, using cross-calibrated methods, allows a statistically defensible estimate of the Chesapeake Bay oyster population, location-specific growth rate and disease status, age-specific estimates of natural (M) and fishing (F) mortalities, and the vital measurements required to build estuary-specific and bay-wide shell substrate budgets.
The contributing objectives are:
(a) Retrospective analysis of data from the Virginia patent tong stock assessment survey (that use random sampling within defined strata) examining the spatial distribution of both oyster density and shell volume: consider re-stratification to improve sampling design and population estimation.
(b) Target sentinel stations (43 in number) in Maryland waters, as examined by MD DNR, for assessment using patent tongs in combination with dredge collections. Modify dredge deployments to timed hauls with GPS to estimate swept area covered, and thereby provide dredge efficiency estimates when compared with patent tong data. These, in turn, allow quantitative population estimates with the ability to bias estimators for size frequency (if they occur). Use swept area dredge methods for all Maryland stations.
(c) In Maryland, sanctuary stock assessments use a random sampling design with defined strata (sanctuaries) with patent tongs, the efficiency of the latter being estimated by independent diver collection.
(d) Provide quantitative estimators of disease prevalence and intensity in all sampled populations bay-wide, supported by an inter-laboratory blind reading of histological preparations to ensure consistency.
(e) Create a linked series of websites where the contributing elements can be viewed, and a bay-wide estimator is made available to interested parties.
Oyster planting protocols to deter losses to cownose ray predation.
NOAA-NCBO. $148,191. 7/1/2011-6/30/2013.
This is a collaborative project between VIMS (Roger Mann, Bob Fisher, Melissa Southworth), the Virginia Marine Resources Commission (James Wesson), the Chesapeake Bay Foundation (Tommy Leggett, Bill Goldsborough) and an industry partner, Cowart’s Seafood and Bevans Oyster (A.J. Erskine). The overall objective of the proposed effort is to examine and identify predator deterrence options that reduce or eliminate predation loss of oyster seed, planted for restoration or culture purposes, to cow nose rays (Rhinoptera bonasus). The unique aspect of the project is that it will be performed at an
a) pre-planting preparation of the target area (be this a lease or reserve).
b) planting density of seed and substrate.
c) overplanting with additional shell post seed planting (this will increase subsequent harvest costs),
d) varying harvest strategies with time post planting.
Collaborative research: summer flounder collections for regional examination of sex ratio and size. Rutgers University. $25,672. 7/1/2010-12/31/2011.
This is a multi-institution project lead by Rutgers University. Summer flounder
Virginia oyster management and restoration. NOAA-NCBO. $214,000. 7/1/2010 – 6/30/2012.
This is a collaborative project between VIMS (Roger Mann, Ryan Carnegie, Melissa Southworth), the Virginia Marine Resources Commission (James Wesson). It has three elements. Two of these focus on large-scale restoration and are lead by VMRC. The third element, lead by VIMS, focuses on the population biology of oysters in the Piankatank River, a river managed for seed oyster production by VMRC. Building on previous work that addressed population dynamics and substrate (shell) budgets in managed systems this work addresses temporal changes in size and fecundity of spawning broodstock, the viability of spawned eggs, and the
- Management of the Piankatank River, Virginia, in support of oyster (Crassostrea virginica, Gmelin 1791) fishery repletion
- Stock Assessment by Patent Tong
- Oysters and Carbonate Budgets in Estuaries
Shell budgets as a tool in oyster restoration and fishery management – application in Louisiana Primary State Seed Grounds. $150,000. National Fish & Wildlife Foundation. 11/1/2010-10/31/2012.
This is a collaborative project between VIMS (Roger Mann), University of New Orleans (Tom Soniat), Rutgers University (Eric Powell), Old Dominion University (John Klinck), and the Louisiana Department of Wildlife and Fisheries (Patrick Banks). The objective of the Shell Marine Habitat Program of the National Fish & Wildlife Foundation is to support conservation and restoration activities that result in measurable benefits to key species and their habitats within coastal ecosystems. Of particular interest is increasing in a measurable manner, populations of the oyster, Crassostrea virginica. We focus on the Primary Public Oyster Seed Grounds (PPSG) of the State of Louisiana. We propose a critical examination of the rate functions that drive both the creation of oyster habitat and its loss in large-scale environmental management application. As such we will provide a critical tool for restoration and maintenance of native oyster populations that
Tom Soniat, Professor/Research, University of New Orleans, University of New Orleans, New Orleans, LA 70148 (UNO) email@example.com, 504-280-7041
Climate Change Impacts in Virginia: Natural resource data records as tools to assess continuing trends. NOAA $120,000. 2/1/2009-1/31/2012.
This is a collaborative project within VIMS between Marcia Berman, Carl Hershner
Link to CCRM for climate change information.
Collaborative Research: Climate Change and Responses in a Coupled Marine System. NSF. $613,707. Lead PI Bonnie McCay (Rutgers) VIMS award $99,999. 10/1/2009-9/30/2012.
This is a multi-institution project lead by Bonnie McCay at Rutgers University with collaborators Dale Haidvogel (Rutgers), Janice
Link to project web page and products at Rutgers
Link to NMFS NEFSC website stock assessments
Shell substrate conditions and predator exclusion in oyster restoration. Virginia Oyster Reef Heritage Foundation. $25,000. Roger Mann (VIMS) and James Wesson (VMRC) 5/1/2011-4/30/2012.
This is a collaborative project between VIMS (Roger Mann) and the Virginia Marine Resources Commission (James Wesson). It has two sections. The first focuses on the
Link to Stock Assessment by Patent Tong
Link to Oysters and Carbonate Budgets in Estuaries